mon/PGMonitor: always send pg creations after mapping

At some point in the dumpling cycle I separated the map stage from the
send stage.  We can send the creates any time we have a non-zero osdmap
epoch, and are in good shape as long as we do the map step after the
osdmap is loaded (hence the post_paxos_update).

Some background:

We originally introduced the map-but-don't send in a2fe0137, at which
point all was well because we only called it on ceph-mon startup.

Later, this turned into post_paxos_update in e635c478, at which point
it was now called by a running monitor.. but we didn't add in the
send_pg_creates().  This is where this bug stems from.

This particular path is responsible for the stalled test referenced in
bug #6673.

Backport: dumpling
Signed-off-by: Sage Weil <sage@inktank.com>

diff --git a/src/mon/PGMonitor.cc b/src/mon/PGMonitor.cc
index c14872d87ef18d874bbbb102172cc331ac95f6ce..0ba7970a0c5045723c477a4185c569207d1d440c 100644 (file)
--- a/src/mon/PGMonitor.cc
+++ b/src/mon/PGMonitor.cc
@@ -306,6 +306,7 @@ void PGMonitor::post_paxos_update()
 {
   if (mon->osdmon()->osdmap.get_epoch()) {
     map_pg_creates();
+    send_pg_creates();
   }
 }